现代化工

现代化工 ›› 2020, Vol. 40 ›› Issue (12) : 156-159,163. DOI: 10.16606/j.cnki.issn0253-4320.2020.12.032

科研与开发

MIL-53及改性材料的制备及其在C₆异构体中的吸附性能研究

梁梦迪, 任秀秀, 钟璟

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Preparation of MIL-53 and its modified materials and their adsorption properties in C₆ isomers

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Received		Published
2020-02-20		2020-12-20
Issue Date	Revised Date
2020-12-15	2020-02-20

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摘要

通过溶剂热法成功合成MIL-53（Fe）及其改性材料MIL-53（Fe）-（CF₃）₂，探究了MIL-53（Fe）及MIL-53（Fe）-（CF₃）₂的最佳制备条件，并通过XRD、SEM以及FT-IR对材料进行表征。结果表明，MIL-53（Fe）和MIL-53（Fe）-（CF₃）₂的最佳反应温度分别为150℃和100℃，最佳反应时间分别为10 h和16 h。以C₆异构体为吸附质，考察了MIL-53（Fe）和MIL-53（Fe）-（CF₃）₂对其静态吸附性能，其中MIL-53（Fe）及MIL-53（Fe）-（CF₃）₂对3-甲基戊烷（3MP）的静态吸附量最大，对2，2-二甲基丁烷（22DMB）的吸附量最小，选择性分别为1.29和1.70。

Abstract

MIL-53(Fe) and its modified materials MIL-53(Fe)-(CF₃)₂ are successfully synthesized by a solvothermal method.The optimal preparation conditions for MIL-53(Fe) and MIL-53(Fe)-(CF₃)₂ are explored,and they are characterized by XRD,SEM and FT-IR.Results show that the optimal reaction temperatures for MIL-53(Fe) and MIL-53(Fe)-(CF₃)₂ are 150℃ and 100℃,respectively,and the optimal reaction time for them is 24 h and 16 h,respectively.Taking C₆ isomers as adsorption objects,their static adsorption properties by MIL-53(Fe) and MIL-53(Fe)-(CF₃)₂ are studied.MIL-53(Fe) and MIL-53(Fe)-(CF₃)₂ have the largest static adsorption capacity to 3-methyl pentane and the smallest adsorption capacity to 2,2-dimethylbutane,with a selectivity of 1.29 and 1.70 respectively.